Solving Systems of Linear Equations: Linear Combinations Answers

The system of equations is solved using the linear combination method.What does 0 = −12 mean regarding the solution to the system?

The system of equations shown is solved using the linear combination methodWhat does 0 = 0 mean regarding the solution to the system?

Melinda and Paula shovel driveways and sidewalks in the winter as a way to earn extra money. Together they shoveled 450 square feet of sidewalk in 30 minutes. Then Melinda shoveled for 20 minutes while Paula shoveled for 25 minutes to complete 345 square feet of driveway.30x + 30y = 45020x + 25y = 345

The linear combination method is applied to a system of equations as shown.4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18

How many solutions are there to the system of equations?